US6568567B2 - Bulk-solid metering system with laterally removable feed hopper - Google Patents

Bulk-solid metering system with laterally removable feed hopper Download PDF

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Publication number
US6568567B2
US6568567B2 US09/248,055 US24805599A US6568567B2 US 6568567 B2 US6568567 B2 US 6568567B2 US 24805599 A US24805599 A US 24805599A US 6568567 B2 US6568567 B2 US 6568567B2
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United States
Prior art keywords
hopper
feed hopper
axis
support structure
extension
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Expired - Lifetime
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US09/248,055
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English (en)
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US20010017303A1 (en
Inventor
James J. McKenzie
Peter Ahlmer
Harald Heinrici
Joseph E. DeKlotz
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Commerzbank AG
Coperion Process Solutions LLC
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Schenck Accurate Inc
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Assigned to SCHENCK ACCURATE, INC. reassignment SCHENCK ACCURATE, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DEKLOTZ, JOSEPH E., MCKENZIE, JAMES J., AHLMER, PETER, HEINRICI, HARALD
Priority to US09/248,055 priority Critical patent/US6568567B2/en
Application filed by Schenck Accurate Inc filed Critical Schenck Accurate Inc
Assigned to SCHENCK ACCURATE, INC reassignment SCHENCK ACCURATE, INC CORRECTIVE ASSIGNMENT TO CORRECT THE STATE OF INCORPORATION OF THE ASSIGNERE IN A PREVIOUSLY RECORDED DOCUMENT AT REEL 9776, FRAME 0811. Assignors: DEKLOTZ, JOSEPH E., MCKENZIE, JAMES L., AHLMER, PETER, HEINRICI, HARALD
Priority to EP00908528A priority patent/EP1159224B1/en
Priority to JP2000598443A priority patent/JP4571312B2/ja
Priority to AU29853/00A priority patent/AU2985300A/en
Priority to PCT/US2000/003213 priority patent/WO2000047516A1/en
Priority to AT00908528T priority patent/ATE553060T1/de
Priority to CA002406727A priority patent/CA2406727C/en
Publication of US20010017303A1 publication Critical patent/US20010017303A1/en
Publication of US6568567B2 publication Critical patent/US6568567B2/en
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Assigned to DRESDNER BANK AG, NIEDERLASSUNG LUXEMBURG reassignment DRESDNER BANK AG, NIEDERLASSUNG LUXEMBURG GRANT OF SECURITY INTEREST IN PATENT RIGHTS Assignors: SCHENCK ACCURATE, INC.
Assigned to COMMERZBANK AKTIENGSELLSCHAFT reassignment COMMERZBANK AKTIENGSELLSCHAFT MERGER (SEE DOCUMENT FOR DETAILS). Assignors: DRESDNER BANK AG
Assigned to MAC PROCESS, LLC reassignment MAC PROCESS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHENCK ACCURATE, INC.
Assigned to SCHENCK PROCESS LLC reassignment SCHENCK PROCESS LLC CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: MAC PROCESS LLC
Assigned to SCHENCK PROCESS LLC reassignment SCHENCK PROCESS LLC RELEASE OF SECURITY AGREEMENT IN PATENTS Assignors: COMMERZBANK AKTIENGESELLSCHAFT (AS SUCCESSOR IN INTEREST TO DRESDNER BANK AG)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/26—Hoppers, i.e. containers having funnel-shaped discharge sections
    • B65D88/28—Construction or shape of discharge section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/08—Interconnections of wall parts; Sealing means therefor

Definitions

  • This invention relates to bulk material handling systems and, more particularly, such systems having a static container and means to move material from such container.
  • Bulk-solid metering systems are used to feed finely divided (powdered or granular) material into processing equipment.
  • the processing equipment fed by the metering system uses the material as the sole constituent or as one of the constituents in the intermediate or final product to be made.
  • a bulk-solid metering system deliver a precisely-measured amount of material for each unit, e.g., minute or hour, of operating time.
  • Sophisticated gravimetric and volumetric measuring systems have been developed to help assure the bulk-solid metering system performs in this way. Examples of bulk-solid metering systems are disclosed in U.S. Pat. Nos.
  • a commercial bakery may employ several bulk-solid metering systems to feed one or more types of flour and other ingredients into a large machine for mixing bread dough. It is not unusual to automate the installation so that the operator can program which metering systems are to be operated and the feed rates therefor in order to make a particular type of bread.
  • a manufacturer of pharmaceutical products may use plural bulk-solid metering systems to feed active and inert ingredients to a powder mixer.
  • the powder mixer feeds what might be termed a pelletizing machine, the final output product of which is tablets.
  • Conventional bulk-solid metering systems are characterized by a support structure to which is secured a cone-like, wide-mouth feed hopper.
  • a conveyor embodied as a screw or auger rotating in a duct.
  • the auger feeds the material in the hopper outwardly through the duct and the hopper spout to the processing equipment.
  • the hoppers may be made of rigid or flexible substance and, if made of the latter, the system also includes paddles to agitate the hopper and help assure continuous flow of material in the hopper.
  • extension hopper mounted to and above the feed hopper.
  • the extension hopper increases the overall hopper capacity and where the hoppers are filled by batch filling from, e.g., an overhead crane, using two hoppers is significantly more efficient.
  • the feed hopper is configured with ease of system fabrication and ease of hopper sidewall agitation in mind.
  • hopper shape which, in horizontal cross-section, is rectangular along substantially the entire hopper height. Fabrication is easy since the feed hopper support frame is, itself, likely to be rectangular. And flat hopper sidewalls are or may be easier to make than curved sidewalls. Further, external agitation paddles work well against flat sidewalls.
  • a rectangular-section hopper is very easy to “transition” from a wide rectangular mouth to the narrow slot-like opening in which the conveying auger is mounted.
  • the feed hopper substantially free of material from the previous batch before the next batch is “charged” into such hopper.
  • Some types of food and pharmaceutical materials deteriorate over time; “first in, first out” material management helps avoid incorporating deteriorated material into the product being made.
  • An object of the invention is to provide an improved bulk-solid metering system which addresses problems and shortcomings of earlier systems.
  • Another object of the invention is to provide an improved bulk-solid metering system which simplifies certain aspects of system repair and maintenance.
  • Another object of the invention is to provide an improved bulk-solid metering system which better promotes mass flow.
  • Yet another object of the invention is to provide an improved bulk-solid metering system which lends itself well to feed hopper agitation. How these and other objects are accomplished will become apparent from the following descriptions and from the drawings.
  • the invention involves a bulk-solid metering system of the type having a support structure and a feed hopper mounted with respect to the structure and having an upper edge.
  • the structure includes an upper member and the upper edge of the feed hopper is below the upper member.
  • the structure defines a lateral opening sized and shaped to permit the feed hopper to be withdrawn laterally through the opening.
  • a significant advantage of the arrangement is that the feed hopper can be serviced without removing any extension hopper which may be attached thereto. Another advantage is that if the feed hopper needs to be removed, the nozzle between the feed hopper spout and the process equipment being fed by the system need not be moved or, at most, needs only minimal time and effort to disconnect such nozzle from the hopper.
  • the support structure extends along a substantially vertical axis.
  • the feed hopper includes a spout which extends from the hopper body along a first axis away from the vertical axis.
  • the lateral opening is positioned to permit withdrawal of the feed hopper away from the vertical axis and along a second axis.
  • the spout and the lateral opening are positioned with respect to one another so that the first axis and the second axis are about 180° apart.
  • the feed hopper may be made of a flexible material or of rigid sheet metal.
  • the system include a feed hopper agitator or stirring system, respectively.
  • a feed hopper agitator or stirring system With a flexible feed hopper, two such agitators are usually used and they periodically “jar” or push against opposite sides of the body of the feed hopper to help keep the material therein from “bridging” or “ratholing” and impairing smooth flow.
  • the agitators are mounted for reciprocating movement along an agitator axis angled with respect to the second axis.
  • the agitator axis and the second axis are substantially perpendicular to one another.
  • Yet other aspects of the new system relate to the ability to remove the feed hopper without removing the extension hopper.
  • An extension hopper mounted in material-feeding relationship to the feed hopper and the hoppers are joined to one another at a hopper joint.
  • the hopper joint is below the upper member of the support structure.
  • the feed hopper includes an upper or first flange
  • the extension hopper includes a second flange
  • a securing device is in overlapping relationship to the flanges, thereby fastening the hoppers to one another.
  • the securing device is a circular hoop which overlaps with and engages both flanges.
  • the body of the feed hopper is made of a flexible material.
  • the first flange is made of a rigid material and is secured to the hopper body by such flexible material. That is, the rigid first flange is molded into the material which permanently bonds.
  • a resilient sealing ring is compressed between the flanges and the extension hopper has a mounting member, e.g., a circular ring, removably affixed to the upper member of the support structure.
  • the extension hopper has an upper edge and a lower mouth and at any one of plural section planes taken between the upper edge and the lower mouth, the cross-sectional shape of the extension hopper is circular.
  • the feed hopper In the feed hopper, its upper flange and its spout are spaced from one another with the conduit being below the upper flange.
  • the feed hopper body has a first cross-sectional shape adjacent to the upper flange and has a second cross-sectional shape intermediate the upper flange and the spout.
  • the first cross-sectional shape is circular, thereby availing the user of very good mass flow characteristics.
  • the second cross-sectional shape is other than circular in that it has a longitudinal axis and a lateral axis perpendicular to and shorter than the longitudinal axis.
  • a specific cross-sectional shape is “race-track-like” in that it has rounded or half-circle ends joined by parallel straight sides.
  • the longitudinal axis of the second cross-sectional shape is substantially parallel to the spout first axis.
  • the feed hopper includes a driven conveyor such as an auger.
  • a conveyor drive unit e.g., electric motor and speed reducer, is supported by the structure and mounted for movement between a conveyor drive position and a hopper-removing position.
  • the feed hopper is made of a rigid material, e.g., stainless steel, rather than of a flexible material.
  • free flow of material in the feed hopper is promoted by a stirring mechanism within the hopper rather than by agitators outside the hopper.
  • Such stirring mechanism is supported by the extension hopper and includes a drive unit, a stirring device and a power shaft extending between the drive unit and the stirring device. The power shaft is mounted for movement with respect to the feed hopper, thereby permitting the stirring device to be removed from the feed hopper.
  • the drive unit and the power shaft are coupled to one another by a coupling.
  • the preferred coupling holds the stirring device at a predetermined location in the feed hopper and yet permits sliding movement of the power shaft in the drive unit.
  • the sliding coupling also permits the power shaft to move upwardly through the drive unit. The system user can thereby raise the stirring device to the elevation necessary to “clear” the feed hopper as such hopper is withdrawn.
  • FIG. 1 is a representative perspective view of a prior art process arrangement using conventional bulk-solid metering systems.
  • FIG. 2 is a perspective view of the new bulk-solid metering system using a feed hopper made of flexible material and with the drive unit in the operating position.
  • FIG. 3 is another perspective view of the new bulk-solid metering system.
  • FIG. 4 is a perspective view, generally like that of FIG. 2, showing the bulk-solid metering system with the drive unit in the maintenance or service position.
  • FIG. 5 is an elevation view of a portion of the system shown in FIGS. 2-4. An agitator is omitted and surfaces of parts are shown in dashed outline.
  • FIG. 6 is an elevation view, partly in section, of portions of the system support structure, feed hopper and extension hopper. Parts are broken away.
  • FIG. 7 is a side elevation view of one embodiment of a feed hopper used in the new system. Parts are broken away.
  • FIG. 8 is a top plan view of the feed hopper of FIG. 7 taken along the viewing axis VA 8 thereof and rotated 90° about such axis. The auger in FIG. 7 is omitted in FIG. 8 .
  • FIG. 9 is a section view, reduced in size, of the feed hopper of FIG. 7 taken along the section plane 9 — 9 thereof.
  • FIG. 10 is a section view, reduced in size, of the feed hopper of FIG. 7 taken along the section plane 10 — 10 thereof.
  • FIG. 11 is a representative elevation view of an extension hopper useful with the new system.
  • FIG. 12 is an enlarged sectional view of the lower mounting component of the hopper of FIG. 11 . Parts are broken away and surfaces of parts are shown in dashed outline.
  • FIG. 13 is an enlarged sectional view of the upper edge of the hopper of FIG. 11 . Parts are broken away and surfaces of parts are shown in dashed outline.
  • FIG. 14 is a perspective view of a securing device used in the new system.
  • FIG. 15 is a sectional elevation view of the device of FIG. 14 taken along the section plane 15 — 15 thereof.
  • FIG. 16 is a section view, reduced in size, of the extension hopper of FIG. 11 taken along the section plane 16 — 16 thereof.
  • FIG. 17 is a section view, reduced in size, of the extension hopper of FIG. 11 taken along the section plane 17 — 17 thereof.
  • FIG. 18 is a representative elevation view depicting certain relationships between the driven shaft and the drive device used in the new system.
  • FIG. 19 is a top plan view of the drive unit shown in FIGS. 2 and 4. Surfaces of the electric motor shaft are shown in dashed outline.
  • FIG. 20 is a representative elevation view of a rigid feed hopper, extension hopper and stirring mechanism used in another embodiment of the system.
  • FIG. 1 illustrates a prior art process arrangement 201 which has several bulk-solid metering systems 203 mounted side by side.
  • Each such system 203 includes an auxiliary hopper 205 above a respective system feed hopper 207 .
  • the feed hoppers 207 extend downwardly into respective housings 209 and terminate in a spout in which an auger or other conveyor operates.
  • Each auger urges material from a respective feed hopper 207 into a multi-branch pipeline 211 which feeds such material into the process equipment.
  • Such equipment may be, e.g., mixing powder additives for paint, making multi-constituent pelletized products or the like.
  • the bulk-solid metering system 10 has a support structure 11 extending upwardly from the floor along a substantially vertical axis 13 .
  • the structure 11 comprises a pair of opposed support columns 15 , 17 , each coupled through a load cell housing (for gravimetric applications) or through a mounting block (for volumetric applications) to an opposed sidewall 19 .
  • Each sidewall 19 has a support pad 21 extending inwardly therefrom and such pads 21 and sidewalls 19 support reciprocating, opposed feed hopper agitators 23 and the drive mechanisms 25 therefor.
  • An upper member 27 spans and is attached to the sidewalls 19 and has a central aperture 29 through it.
  • the structure 11 also supports a feed hopper 31 and an extension hopper 33 in a manner described below.
  • the feed hopper 31 has an upper edge 34 configured to include an upper or first flange 35 . While the hopper body 37 is (in one embodiment) made of a flexible plastic material, the flange 35 is made of a rigid material, e.g., steel, which is molded into the plastic material. As particularly shown in FIGS. 5 and 6, the upper edge 34 of the feed hopper is spaced somewhat below the upper member 27 .
  • the hopper body 37 tapers downwardly and inwardly to form a laterally extending duct 39 at the bottom of the hopper 31 .
  • the duct 39 is generally cylindrical and top-opening so the auger rotating in the duct 39 may receive the material flowing downwardly in the hopper and urge such material out of the hopper spout 43 .
  • An extension piece often referred to as a nozzle 45 , is attached to the spout 43 and secured on the structure wall 47 by a clamp 49 . Material urged out of the spout 43 by the auger 41 flows along the nozzle 45 and to the process equipment in which the material is being used.
  • the feed hopper body 37 has a circular upper flow portion 51 and opposed, flat agitator portions 53 extending downwardly from the portion 51 .
  • Such body 37 has a first cross-sectional shape adjacent to the upper flange 35 and a second, different cross-sectional shape intermediate the upper flange and the spout.
  • the first cross-sectional shape 55 is circular (as shown in FIG. 9 ), thereby availing the user of very good mass flow characteristics.
  • the second cross-sectional shape 57 shown in FIG. 10, is other than circular.
  • such shape 57 has a longitudinal axis 59 and a lateral axis 61 perpendicular to and shorter than the longitudinal axis 59 .
  • Such shape 57 is “race-track-like” in that it has rounded or half-circle ends 63 joined by parallel straight sides 65 .
  • the longitudinal axis 59 of the second cross-sectional shape 57 is substantially parallel to the spout axis 67 , also referred to herein as the spout first axis 67 .
  • the support structure 11 defines a lateral opening 69 sized and shaped to permit the feed hopper 31 to be withdrawn laterally through the opening 69 .
  • the opening 69 is positioned to permit withdrawal of the feed hopper 31 away from the vertical axis 13 and along a second axis 71 .
  • the spout 43 and the lateral opening 69 are positioned with respect to one another so that the first axis 67 and the second axis 71 are about 180° apart.
  • the system 10 includes a feed hopper agitator 23 and, usually, two such agitators 23 (one of which is omitted in FIG. 5) which periodically “jar” or push against opposite portions 53 of the flexible body 37 .
  • Such agitation helps keep the material in the hopper 31 from “bridging” or “ratholing” and impairing smooth flow.
  • the agitators 23 are mounted for reciprocating movement along an agitator axis 73 angled with respect to the second axis 71 and, most preferably, perpendicular to and spaced above such second axis 71 . It is to be appreciated that the agitator portions 53 are flat.
  • the agitators 23 can be positioned (in their sequence of positions assumed during agitation) so that such agitators 23 are spaced slightly from the portions 53 to provide clearance for the hopper 31 , the presence of the agitators 23 does not impair lateral withdrawal of the hopper 31 .
  • an extension hopper 33 is mounted in material-feeding relationship to the feed hopper 31 and includes a mounting component 75 .
  • Such component 75 has a circular mounting ring 77 , a circular extension hopper flange 79 spaced below the ring 77 and a cylinder-like component body 81 extending between and rigidly joining the ring 77 and the flange 79 .
  • the diameters of the mounting ring 77 and the aperture 29 in the upper support member 27 are cooperatively selected so that the ring 77 sits atop such member 27 and cannot pass through the aperture 29 .
  • the extension hopper 33 is mounted to the member 27 by fasteners, e.g., bolts or the like, extending through the ring 77 and the member 27 .
  • the diameters of the aperture 29 and the flange 79 are selected so that the flange 79 is laterally coextensive with the feed hopper flange 35 and the flange 79 “clears” the aperture 29 and can be lifted out therethrough when the extension 33 hopper is removed from the support structure.
  • the hoppers 31 , 33 are joined to one another at a hopper joint 83 which is below the upper member 27 of the support structure 11 . And as noted above, the flange 35 of the hopper 31 is below such member 27 .
  • a securing device 85 is in overlapping relationship to the flanges 35 , 79 , thereby fastening the hoppers 31 , 33 to one another.
  • the securing device 85 is a circular hoop which overlaps with both flanges 35 , 79 and, when the securing bolt 87 (or other suitable securing mechanism, e.g., a toggle latch) is tightened, the device 85 secures both flanges 35 , 79 to one another.
  • the ring 89 is molded integrally with the body 37 and the flange 35 . But where the hopper 31 is rigid, such ring 89 is a separate component.
  • the extension hopper 33 has an upper edge 91 and a lower mouth 93 .
  • the cross-sectional shape of the extension hopper 33 is circular.
  • the feed hopper 31 includes a driven conveyor such as the auger 41 mentioned above.
  • a conveyor drive unit 95 e.g., an electric motor 97 and speed reducer 99 , is supported by the structure 11 . While the drive unit 95 may take any of a number of configurations and be mounted in any of several ways (some of which may not obstruct the lateral opening 69 ), a preferred way is to mount the unit 95 for pivoting movement between a conveyor drive position shown in FIG. 2 and a hopper-removing position shown in FIG. 4 .
  • the auger 41 includes an auger-driving shaft 101 having a pair of drive studs 103 protruding therefrom and the drive unit 95 includes a rotating drive head 105 which has a slot 107 to engage the studs 103 .
  • the studs 103 and slot 107 are cooperatively sized and located so that the slot 107 may come into registry with and engage the studs 103 when the drive unit 95 is pivoted in the direction indicated by the arrow 109 .
  • a significant advantage of the new system 10 is that the feed hopper 31 can be removed for hopper or auger maintenance without removing any extension hopper 33 which may be attached thereto. Another advantage is that if the feed hopper 31 needs to be removed, the nozzle 45 between the feed hopper 31 and the process equipment being fed by the system 10 need not be moved or, at most, needs only minimal time and effort to disconnect such nozzle 45 from the hopper 31 . And the feed and extension hoppers 31 , 33 can be easily joined to one another and, just as easily, the extension hopper 33 can be removed from the support structure 11 , if necessary.
  • the feed hopper 31 is made of a rigid material, e.g., stainless steel, rather than of a flexible material.
  • the extension hopper 33 is also made of stainless steel as in the embodiment of FIGS. 2-4.
  • a preferred feed hopper 31 is shaped like an inverted truncated cone. That is, such hopper has a sidewall which tapers inwardly and downwardly and which is of circular cross-sectional shape along substantially all of its height. But for the duct 39 described above, the hopper bottom 111 is substantially flat and perpendicular to the vertical axis 13 .
  • the structure at 113 represents the upper flange 35 of the feed hopper 31 .
  • the stirring mechanism 115 includes a drive unit 117 supported by and atop a cover 119 on the extension hopper 33 .
  • Such drive unit 117 includes a right-angle speed reducer 121 , preferably of the hollow shaft type, and an electric drive motor 123 .
  • a stirring device 125 is used to promote mass flow and an exemplary device 125 includes a pair of radially extending blades 127 .
  • the blade edges 129 are located and configured to closely conform to the shape of the hopper 31 while yet avoiding contacting such hopper 31 along either the sidewall or the bottom.
  • An elongated power shaft 131 is rigidly affixed to the stirring device 125 , extends upwardly and is in driven engagement with the drive unit 117 .
  • the shaft 131 cannot rotate independently of the speed reducer 121 but is configured to slide axially therewithin. (As examples, a key or spline coupling meets these parameters.)
  • the stirring device 125 (with its shaft 131 ) are, during operation, held at predetermined locations, shown in FIG. 20 in solid outline, in the feed hopper 31 . And when it is desired to withdraw the feed hopper 31 , the collar 133 is loosened, the stirring device 125 and shaft 131 raised to the positions shown in FIG. 20 in dashed outline, and the collar 133 re-tightened. This not only removes the stirring device 125 from the feed hopper 31 , it also conveniently holds such device 125 in an elevated position, pending completion of service work.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US09/248,055 1999-02-10 1999-02-10 Bulk-solid metering system with laterally removable feed hopper Expired - Lifetime US6568567B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US09/248,055 US6568567B2 (en) 1999-02-10 1999-02-10 Bulk-solid metering system with laterally removable feed hopper
EP00908528A EP1159224B1 (en) 1999-02-10 2000-02-08 Bulk-solid metering system with laterally removable feed hopper
JP2000598443A JP4571312B2 (ja) 1999-02-10 2000-02-08 横方向に移動可能な供給ホッパーを備えたバルク固体計量システム
AU29853/00A AU2985300A (en) 1999-02-10 2000-02-08 Bulk-solid metering system with laterally removable feed hopper
PCT/US2000/003213 WO2000047516A1 (en) 1999-02-10 2000-02-08 Bulk-solid metering system with laterally removable feed hopper
AT00908528T ATE553060T1 (de) 1999-02-10 2000-02-08 Schüttgutdosiervorrichtung mit seitlich entfernbarem trichter
CA002406727A CA2406727C (en) 1999-02-10 2000-02-08 Bulk-solid metering system with laterally removable feed hopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/248,055 US6568567B2 (en) 1999-02-10 1999-02-10 Bulk-solid metering system with laterally removable feed hopper

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Publication Number Publication Date
US20010017303A1 US20010017303A1 (en) 2001-08-30
US6568567B2 true US6568567B2 (en) 2003-05-27

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US (1) US6568567B2 (enExample)
EP (1) EP1159224B1 (enExample)
JP (1) JP4571312B2 (enExample)
AT (1) ATE553060T1 (enExample)
AU (1) AU2985300A (enExample)
CA (1) CA2406727C (enExample)
WO (1) WO2000047516A1 (enExample)

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US20020113080A1 (en) * 2001-02-14 2002-08-22 John Beal Removable material hopper assembly and method of using same to eliminate residual ingredient material
US6688496B1 (en) * 1999-10-01 2004-02-10 Schenck Process Gmbh Dosing device for bulk materials
US20040222241A1 (en) * 2003-05-09 2004-11-11 Azo-Verwaltungs-Gmbh Device for dispensing flowable material components
US20070289783A1 (en) * 2006-06-15 2007-12-20 Schenck Accurate, Inc. Counterbalanced dispensing system
US9650216B2 (en) 2013-01-22 2017-05-16 Arrows Up, Llc Bulk material shipping container unloader
US20190373822A1 (en) * 2018-06-12 2019-12-12 Ned A Hamad, JR. Collapsible Mulch Dispenser
US10676239B2 (en) 2016-06-30 2020-06-09 Sandbox Logistics, Llc Bulk material shipping container
US10759610B1 (en) 2019-05-03 2020-09-01 Sandbox Logistics, Llc Bulk material conveyor
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US10926940B2 (en) 2018-11-20 2021-02-23 Sandbox Enterprises, Llc Bulk material shipping container
US10994954B2 (en) 2016-06-30 2021-05-04 Sandbox Enterprises, Llc Bulk material shipping container unloader
US11047717B2 (en) 2015-12-22 2021-06-29 Halliburton Energy Services, Inc. System and method for determining slurry sand concentration and continuous calibration of metering mechanisms for transferring same
US11066259B2 (en) 2016-08-24 2021-07-20 Halliburton Energy Services, Inc. Dust control systems for bulk material containers
US11173826B2 (en) 2019-06-12 2021-11-16 Sandbox Enterprises, Llc Bulk material shipping container trailer
US11186431B2 (en) 2016-07-28 2021-11-30 Halliburton Energy Services, Inc. Modular bulk material container
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US11311849B2 (en) 2016-03-31 2022-04-26 Halliburton Energy Services, Inc. Loading and unloading of bulk material containers for on site blending
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EP1159224A4 (en) 2006-05-31
EP1159224B1 (en) 2012-04-11
CA2406727C (en) 2008-04-22
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AU2985300A (en) 2000-08-29
JP2002536275A (ja) 2002-10-29

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